Improvement in driving hollow metal piles for tube-wells



A. Le GRAND 8v R. SUTCLIFP. Driving Hollow Metal Piles for Tube-Wells, &0.

Patented June 3,1879.

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NITED STATES PATENT OFFICE.

ALFRED LE GRAND AND ROBERT SUTOLIFF, OF LONDON, ENGLAND.

IMPROVEMENT IN DRIVING HOLLOW METAL PILES FOR TUBE-WELLS, dc.

Specification :forming part of Letters Patent N0. 216,042, dated June 3, i879; application filed April S, 1879, patented in England, August 425, 1877.

.To all @110m it may concern le it known that we, ALFRED LE GRAND and Bonner SUrcLrrr, both of Magdala Works, lOO Dunhill Row, in the city of London, England, have invented new and useful Improvements in Driving v'Hollow Metal Piles, suitable to serve 'for tube-wells, for foundations to structures, for sockets for telegraph-poles, and for sncli like uses, which improvements are fully set forth in the following specification, referencebeing had to 'the accompanying drawings.

This invention has for its object improvements in driving hollow metal piles, suitable to serve :for tube-wells, iforfou ndations to structures, for sockets for telegraph-poles, and for such like uses.

Hollow metal piles have for years pastbeen in common use, especially for tube-wells. Such piles consist, usually, of wrought-iron tubes of from an inch to several inches in. diameter', armed at the lower end with a hardened point, and immediately above the point perforated to admit the water. The ordinary way of driving such piles into the ground has been by means of a weight or monkey raised and allowed to fall upon a clip secured around the exterior of the pipe. lith this arrangement, as the sinkingl progresses, the blows are necessarily struck at a greater and greater distance from the point of the pile, and they thence become, as pra cti ce proves, less and less efficient.

According to our invention we strike the blows for sinking hollow piles by means of a weightentering within the pile and striking upon it near the point, however far this point may be beneath the surface ofthe ground.

in order that our said invention may be most fully understood and readily carried into clieet, we will proceed to describe the drawings hereunto annexed.

Referring to the drawings, Figure l isa vertical section of a hollow pile, consisting of a wrought or cast iron pipe, a., havin g a stecled point, a', welded onto it.

b is the rammer or monkey, consisting of an iron weight which is of a size to enter within the hollow pile. It is raised by the rope c or by rods or chains, and then allowed to drop, and by the repetition of this operation the pile is driven.

As the pile sinks, length after length of wrought-iron pipe is screwed on at the top by the ordinary screw couplings, until the required depth is attained, or until the pile is :Iirmly set. In suitable soils piles may in this way be sunk to very considerable depths, and with the aid of very little apparatus, and this of the simplest description. lt will be found, especially after some depth has been reached, that the blows struck in this manner in comparatively close proximity to the point are much more effective than equivalent blows struck at a long distance from the point above the surface of the ground.

Fig. 2 shows a dwarf pile adapted to serve as a socket for a telegraph-post. In this case the driving-weight or monkey may be provided with a handle, so that it becomes a handrainnicr.

In the case of tube-wells, the soil is liable to enter through the perforations provided for the water, and unless suitable provision is made it may much lessen the eil'ect of the blows of the internal weight or monkey. To avoid this we adopt the arrangement represented in section at Fig. 3.

c is the lower length of piping, with its solid pointul, and perforated above. u? is the length of piping immediately above, connected with the length beneath by an ordinary screw collar or coupling. lithin the coupling, and bctween the ends of the tubes u. and c2, a wroughtiron ring is held; and a hard anvil-block, (l, to receive the blows of the weight or monkey b, is screwed into the ring.

lhen the driving is done, the plug or aurilblock is unscrewed and withdrawn by means of a suitable key put down from the surface.

For some purposes the piles may advantageously be made of cast-iron.

Having thus described the nature of and the manner of performing our said invention of improvements in driving hollow metal piles suitable to serve for tube-wells, for foundations to structures, :for sockets for telegraph-posts, and for like uses, we would have it understood that we claim- The means for driving a hollow metal pile by a weight or monkey entering within the pile, substantially as described.

A. LE GRAND. ROBT. SUTOLIFF.

Vitnesses:

JN0. DEAN, p

17 Graccchm'cll Street, London. G. F. \VARRI 1N, Notary Public,

17 Gruocclmrcll/ Street, London. 

